package com.hmdp.service.impl;

import cn.hutool.core.bean.BeanUtil;
import cn.hutool.core.bean.copier.CopyOptions;
import cn.hutool.core.lang.UUID;
import cn.hutool.core.util.RandomUtil;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.hmdp.dto.LoginFormDTO;
import com.hmdp.dto.Result;
import com.hmdp.dto.UserDTO;
import com.hmdp.entity.User;
import com.hmdp.mapper.UserMapper;
import com.hmdp.service.IUserService;
import com.hmdp.utils.RegexUtils;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.BeanUtils;
import org.springframework.data.redis.core.StringRedisTemplate;
import org.springframework.stereotype.Service;

import javax.annotation.Resource;
import javax.servlet.http.HttpSession;

import java.util.HashMap;
import java.util.Map;
import java.util.concurrent.TimeUnit;

import static com.hmdp.utils.RedisConstants.*;
import static com.hmdp.utils.SystemConstants.USER_NICK_NAME_PREFIX;

/**
 * <p>
 * 服务实现类
 * </p>
 *
 * @author 虎哥
 * @since 2021-12-22
 */
@Slf4j
@Service
public class UserServiceImpl extends ServiceImpl<UserMapper, User> implements IUserService {

    @Resource
    private StringRedisTemplate stringRedisTemplate;

    @Override
    public Result sendCode(String phone, HttpSession session) {

        if(RegexUtils.isPhoneInvalid(phone)){
         return Result.fail("手机号格式错误");
        }

        String code = RandomUtil.randomNumbers(6);

        stringRedisTemplate.opsForValue().set(LOGIN_CODE_KEY+phone,code,30, TimeUnit.MINUTES);
        //session.setAttribute("code",code);
        log.debug("短信发送成功，验证码{}",code);
        return Result.ok();
    }

    @Override
    public Result login(LoginFormDTO loginForm, HttpSession session) {

        if(RegexUtils.isPhoneInvalid(loginForm.getPhone())){
            return Result.fail("手机号格式错误");
        }
        String code =  stringRedisTemplate.opsForValue().get(LOGIN_CODE_KEY+loginForm.getPhone());
       // Object code = session.getAttribute("code");
        if(code == null || !code.equals(loginForm.getCode())){
            log.debug("redis验证码:{}",code);
            return Result.fail("验证码错误");
        }

        User user = query().eq("phone",loginForm.getPhone()).one();

        if(user == null){
            user = createUserWithPhone(loginForm.getPhone());
        }
        String token = UUID.randomUUID().toString(true);

        UserDTO userDTO = BeanUtil.copyProperties(user,UserDTO.class);
        Map<String,Object> userMap =  BeanUtil.beanToMap(userDTO,new HashMap<>(),
                CopyOptions.create()
                        .setIgnoreNullValue(true)
                        .setFieldValueEditor((fieldName,fieldValue)->fieldValue.toString()));

        String tokenKey = LOGIN_USER_KEY+token;
        stringRedisTemplate.opsForHash().putAll(tokenKey,userMap);
        stringRedisTemplate.expire(tokenKey,LOGIN_USER_TTL, TimeUnit.MINUTES);
        //session.setAttribute("user", BeanUtil.copyProperties(user, UserDTO.class));
        return Result.ok(token);
    }

    private User createUserWithPhone(String phone) {
        User user = new User();
        user.setPhone(phone);
        user.setNickName(USER_NICK_NAME_PREFIX+RandomUtil.randomString(10));
        save(user);
        return user;
    }
}
